Most??? Most people with Schizophrenia have it in a MINOR form, and thus completely functional in society, they just do NOT hear voices, it is only in the severe versions of Schizophrenia due you get to that point (Hearing voices is NOT Schizophrenia, Schizophrenics CAN hear voices, but that is an additional mental problem NOT Schizophrenia.

The big problem is disorganized thinking, for example, 1+1=B for B is the second letter in the alphabet. They thinking has a logic, but it is NOT want most people would call Logical.

Please note, Some people confuse with this with split personality, but that is a completely different (and unrelated) mental disorder

Most of the thinking of Schizophrenics cause no problems, they cross at walk signs, stop on Red lights etc. On the other hand some of they actions can be bazaar for example, jumping in front of a speeding car, so she can see her daughter who is in the car.

The Wikipedia articles makes some other "mistakes" for example, mention first onset is young adulthood, but then does NOT point out it hits most males in the mid to later teens, most females onset is in the mid to late 20s (Thus you get a lot of women with advance degrees with Schizophrenia, but few men, for the Schizophrenia hits men BEFORE they go to Collage, hits most women AFTER they go to Collage).

All told, they is NOTHING that shows a person with Schizophrenia will do greater acts of violence then a person without Schizophrenia. The problem is what other mental disorders did this person have, those other disorders, including Paranoia are greater indicator of violence then Schizophrenia,

One last comment, Schizophrenia is also tied in with genius, the exact relationship is unknown but it exists.